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Application of a Finite-difference Solver with a Contraction Preconditioner to 3D EM Modeling in Mineral Exploration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Near Surface Geoscience 2016 - First Conference on Geophysics for Mineral Exploration and Mining, Sep 2016, Volume 2016, p.1 - 5
Abstract
Summary
This paper uses a novel approach to constructing an effective preconditioner for finite-difference (FD) electromagnetic modeling in applications to mineral exploration. This approach uses a FD contraction operator, similar to one developed for integral equation modeling. We demonstrate the effectiveness of this new modeling method and corresponding code in the sensitivity study of magnetotelluric data to an ore deposit, typical for Norilsk ore region.
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